Home / 40,378.20-55,721.36-22,473.21

Finding the Fourth Proportional to 40,378.20, 55,721.36 and 22,473.21

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Solution

The fourth proportional to 40,378.20, 55,721.36 and 22,473.21 is: 31,012.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,378.20 : 55,721.36 = 22,473.21 : x
  2. Step 2: Convert to fraction form
    40,378.20/55,721.36 = 22,473.21/x
  3. Step 3: Cross multiply
    40,378.20x = 55,721.36 × 22,473.21
  4. Step 4: Simplify right side
    40,378.20x = 1,252,237,824.77
  5. Step 5: Solve for x
    x = 1,252,237,824.77/40,378.20
  6. Step 6: Final answer
    x = 31,012.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.